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mmc/dw_mmc: Allocate the correct amount of descriptors

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This fixes two issues:
 * a descriptor was allocated for every block, while a descriptor can
   take 8 blocks
 * there was an off-by-one error in the descriptor preparation: there
   were two last descriptors, one with length==0

Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Cc: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Andy Fleming <afleming@gmail.com>
This commit is contained in:
Mischa Jonker 2013-07-26 16:18:40 +02:00 committed by Pantelis Antoniou
parent 2136d22630
commit 21bd5761a6
1 changed files with 2 additions and 2 deletions
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4
drivers/mmc/dw_mmc.c
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@ -72,7 +72,7 @@ static void dwmci_prepare_data(struct dwmci_host *host,
dwmci_set_idma_desc(cur_idmac, flags, cnt,
start_addr + (i * PAGE_SIZE));
if(blk_cnt < 8)
if (blk_cnt <= 8)
break;
blk_cnt -= 8;
cur_idmac++;
@ -111,7 +111,7 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
{
struct dwmci_host *host = (struct dwmci_host *)mmc->priv;
ALLOC_CACHE_ALIGN_BUFFER(struct dwmci_idmac, cur_idmac,
data ? data->blocks : 0);
data ? DIV_ROUND_UP(data->blocks, 8) : 0);
int flags = 0, i;
unsigned int timeout = 100000;
u32 retry = 10000;